Mazda 626 Station Wagon, Workshop Manual

Page: 339 / 577

ON-BOARD DIAGNOSTIC
PCM INSPECTION
Using SSTs (NGS tester)
1. Connect the SSTs (NGS tester) to the DLC.
Note
• Referring to the SST instruction manual.
2. Turn the ignition switch to ON.
3. Select the “PID/DATA MONITOR AND RECORD"
function on the NGS tester display and press
TRIGGER. (See Section F1.)
4. Select the appropriate PID on the NGS tester
display and press START.
5. Measure the PID value.
• If PID value is not within the specification,
follow the instruction in ACTION column.
Note
• The PID/DATA MONITOR function monitors
the calculated value of the input/output signals
in the PCM. Therefore, if a monitored value of
an output device is out of specification, it is
necessary to inspect the monitored value of
the input device related to the output device
control. Since an output device malfunction is
not directly indicated as a malfunction of the
monitored value for the output device, it is
necessary to inspect the output device
individually using the simulation function, etc.
• The signal which is not indicated by monitor
uses SST (Pin Box) or voltmeter, and PCM
terminal voltage is measured.
PID/DATA MONITOR TABLE (FOR EC-AT CONTROL)
Monitor item
(Definition)
Unit/
Condition
Condition/Specification Action
PCM
terminal
1GR
(First gear)
ON/OFF
First gear:ON
OthersrOFF
Inspect following PIDs: SHIFT A, SHIFT
B, SHIFT C.
—
2GR
(Second gear)
ON/OFF
Second gear: ON
Others.OFF
Inspect following PIDs: SHIFT A, SHIFT
B, SHIFT C.
—
3GR
(Third gear)
ON/OFF
Third gear: ON
Others:OFF
Inspect following PIDs: SHIFT A, SHIFT
B, SHIFT C.
-
4GR.
(Fourth gear)
ON/OFF
Fourth gear: ON
Others:OFF
Inspect following PIDs: SHIFT A, SHIFT
B, SHIFT C.
ATFT
(Transaxle fluid
temperature)
°C °F
Transaxle fluid temperature 20 °C
{68 °F}: 20 °C {68 °F}
Transaxle fluid temperature 130 °C
{266 °F}: 130 °C{266°F} Inspect TFT sensor.
See K2-34 TRANSAXLE FLUID
TEMPERATURE (TFT) SENSOR
INSPECTION
37
ATFT V
(Transaxle fluid
temperature
sensor signal
voltage)
V
Transaxle fluid temperature 20 °C
{68 °F}: 3.3—3.4 V
Transaxle fluid temperature 130 °C
{266 °F}: 1.7— 1.8 V
Inspect TFT sensor.
See K2-34 TRANSAXLE FLUID
TEMPERATURE (TFT) SENSOR
INSPECTION
37
B+ (B+) V Ignition switch ON: B+
Inspect main relay.
See Section F1
Inspect battery.
See Section G
55
DSW
(TR switch
[D range])
ON/OFF
D range: ON
Others: OFF
Inspect TR switch.
See K2-30 TRANSAXLE RANGE
(TR) SWITCH INSPECTION
6
HOLD LP
(HOLD indicator
light)
ON/OFF
HOLD mode: ON
Others: OFF
Inspect HOLD indicator light.
See K2-40 HOLD INDICATOR LIGHT
INSPECTION
43
HOLD SW
(HOLD switch)
ON/OFF
HOLD switch pressed: ON
Others: OFF
Inspect HOLD switch.
See K2-29 HOLD SWITCH
INSPECTION
29
L SW
(TR switch
[L range])
ON/OFF
L range: ON
Others: OFF
Inspect TR switch.
See K2-30 TRANSAXLE RANGE
(TR) SWITCH INSPECTION
7
K2-132